1 files changed, 52 insertions, 0 deletions
diff --git a/meta-skeleton/recipes-kernel/kernel-module-slave/files/slave.c b/meta-skeleton/recipes-kernel/kernel-module-slave/files/slave.c
new file mode 100644
index 00000000000..b1d9b92cc6b
--- /dev/null
+++ b/meta-skeleton/recipes-kernel/kernel-module-slave/files/slave.c
@@ -0,0 +1,52 @@
+/*
+ * External kernel module dependency exemple - slave module
+ *
+ * Copyright (C) 2020 Hubert CHAUMETTE
+ */
+
+#include <linux/module.h>
+#include <master.h>
+
+static int slave_notify(struct notifier_block *self,
+			unsigned long action, void *data);
+
+static struct notifier_block slave_nb = {
+	.notifier_call = slave_notify,
+};
+
+static int slave_notify(struct notifier_block *self,
+			unsigned long action, void *data)
+{
+	struct master_evt_data *d = (struct master_evt_data *)data;
+
+	BUG_ON(data == NULL);
+
+	switch (action) {
+	case MASTER_EVT_READ:
+		pr_info("slave: \"%.*s\" read from master\n", d->count, d->buf);
+		break;
+	case MASTER_EVT_WRITE:
+		pr_info("slave: \"%.*s\" written to master\n", d->count, d->buf);
+		break;
+	default:
+		break;
+	}
+
+	return NOTIFY_DONE;
+}
+
+static int __init slave_init(void)
+{
+	return master_notifier_register(&slave_nb);
+}
+module_init(slave_init);
+
+static void __exit slave_exit(void)
+{
+	master_notifier_unregister(&slave_nb);
+}
+module_exit(slave_exit);
+
+MODULE_AUTHOR("Hubert CHAUMETTE");
+MODULE_DESCRIPTION("External kernel module dependency exemple - slave module");
+MODULE_LICENSE("GPL");